Practice question

What does a sudden drop in brake pedal resistance (pedal sinking to the floor) indicate while driving?

  1. Normal operation of the air conditioning system
  2. A critical hydraulic brake fluid leak or master cylinder seal failure; immediate emergency stopping using engine braking and handbrake is required
  3. ABS is active
  4. Tyres are slightly overinflated

Answer: B — A critical hydraulic brake fluid leak or master cylinder seal failure; immediate emergency stopping using engine braking and handbrake is required

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